Screw-driver



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(No Model.)

SCREW DRIVER.

Patent ed Jan. 22, 1884.

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NITED STATES PATENT OFFICE-Q GEORGE E. GAY AND JOHN 11. PARSONS, onAUGUSTA, MAINE,

SCREW-DRIVER.

SPEGIFICATION.forming part of Letters Patent No. 292,298, dated January22, 1884.

Application filed May 17, 1883. (No modch) To all whom it may concern Beitknown that we, GEORGE E; GAY and JOHN H. PARSONS, of Augusta, in thecounty of Kennebec and State of Main e, have invented a new and ImprovedScrew-Driver, of which the following is a full, clear, and exactdescription.

This invention is an improvement upon that class of screw-drivers inwhich the blade is secured in the handle'by means of a metallic plugplaced in a transverse position in the handle, and has for its object todispense with the flanges or screws in or upon such metallic plugs,thereby greatly simplifying and cheapening the construction of thescrew-driver; and to this end the invention consists in the combinationand arrangement of parts, substantially as hereinafter fully set forthand claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of our new and improved screw-driver.Fig. 2 is alongitudinal sectional elevation of the same,.and Fig. 3 is aperspective view of the blade and plug removed from the handle.

The handle A of the screw-driver is bored axially, as shown at a, toreceive the shank of shank, after passing through the hole 0 in the plug(J, will have to be driven into said hole, thus causing the blade to beheld in the handle with sufficient firmness. The hole 0 through the plug0 might be angular or elliptical, or of any shape to lock with the shankof the blade B, for holding it from turning in the handle A; but veprefer to make the hole 0 round and supply it with the key a, and toform the shank of the blade with the groove 0 to receive the key, andthus cause the plug to retain the blade.

By constructing the shank of the blade B to fectually locks the plug 0in the recess with out extra means or attachments, and thus bothcheapens and improves the construction of the screw-driver.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- In a screw-driver, the handle A, having therecess 1) and axial hole a, reaching past its recess, as at a, saidextended. portion a being made smaller than the hole a, in combinationwith the blade B, having the longitudinal groove 0 in its shank, plug 0,having an aperture, c, and'key c, substantially as and for the purposeset forth. t v

' GEORGE E. GAY. JOHN H. PARSONS.

\Vituesses: E. W. Wrn'rEHoUsE,

- L: M. PEROIVAL.

